<script setup lang='ts'>
import { ref, reactive } from 'vue'
const num = ref(2)
</script>
<template>
    <div class="csn">画布大小
          <el-input-number v-model="num" :step="2" step-strictly />
    </div>
</template>

<style lang='scss' scoped>
.csn {
    font-size: 16px;
}
</style>